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When generic Long type SingleKeyTableShardingAlgorithm is used, why does the ClassCastException: Integer can not cast to Long exception appear? . . . . . . . . . . . . . . . . . . . . . . . . . . . . specified as Long, and the field type in the database table is bigint, a ClassCastExcep- tion: Integer can not cast to Long exception occurs. . . . . . . . . 579 13.3.6 Sharding Why is the default distributed implements StandardShardingAlgorithm<Integer> { @Override public String doSharding(final Collection availableTargetNames, final PreciseShardingValue<Integer> shardingValue) { String resultDatabaseName

When generic Long type SingleKeyTableShardingAlgorithm is used, why does the ClassCastException: Integer can not cast to Long exception appear? . . . . . . . . . . . . . . . . . . . . . . . . . . . . specified as Long, and the field type in the database table is bigint, a ClassCastExcep- tion: Integer can not cast to Long exception occurs. . . . . . . . . 550 13.4.6 Sharding Why is the default distributed implements StandardShardingAlgorithm<Integer> { @Override public String doSharding(final Collection availableTargetNames, final PreciseShardingValue<Integer> shardingValue) { String resultDatabaseName

When generic Long type SingleKeyTableShardingAlgorithm is used, why does the ClassCastException: Integer can not cast to Long exception appear? . . . . . . . . . . . . . . . . . . . . . . . . . . . . specified as Long, and the field type in the database table is bigint, a ClassCastExcep- tion: Integer can not cast to Long exception occurs. . . . . . . . . 497 8.3.6 Sharding Why is the default distributed peripheral data to databases managed by Apache ShardingSphere. • Migration of integer or string unique key tables. • Migration of integer or string primary key tables. Procedures not supported • Migration without

When generic Long type SingleKeyTableShardingAlgorithm is used, why does the ClassCastException: Integer can not cast to Long exception appear? . . . . . . . . . . . . . . . . . . . . . . . . . . . . specified as Long, and the field type in the database table is bigint, a ClassCastExcep- tion: Integer can not cast to Long exception occurs. . . . . . . . . 458 8.3.6 Sharding Why is the default distributed Supported • Migration of peripheral data to databases managed by Apache ShardingSphere. • Migration of integer or string primary key tables. Procedures not supported • Migration without primary key tables.

[Sharding] When generic Long type SingleKeyTableShardingAlgorithm is used, why doesClassCastException: Integer can not cast to Long exception appear? . . . . . . . . . . . . . . . . . . . . . . . . . . . . specified as Long, and the field type in the database table is bigint, a ClassCastExcep- tion: Integer can not cast to Long exception occurs. . . . . . . . . 348 x 7.8.13 [Sharding] Why are the default CREATE SCHEMA alt_nsp1; ALTER AGGREGATE alt_agg3(int) OWNER TO regress_alter_generic_user2; CREATE CONVERSION alt_conv1 FOR ‘LATIN1’TO ‘UTF8’FROM iso8859_1_to_utf8; CREATE FOREIGN DATA WRAPPER alt_fdw1 CREATE

[Sharding] When generic Long type SingleKeyTableShardingAlgorithm is used, why doesClassCastException: Integer can not cast to Long exception appear? . . . . . . . . . . . . . . . . . . . . . . . . . . . . specified as Long, and the field type in the database table is bigint, a ClassCastExcep- tion: Integer can not cast to Long exception occurs. . . . . . . . . 360 x 7.8.13 [Sharding] Why are the default CREATE SCHEMA alt_nsp1; ALTER AGGREGATE alt_agg3(int) OWNER TO regress_alter_generic_user2; CREATE CONVERSION alt_conv1 FOR ‘LATIN1’TO ‘UTF8’FROM iso8859_1_to_utf8; CREATE FOREIGN DATA WRAPPER alt_fdw1 CREATE

7.8 When generic Long type SingleKeyTableShardingAlgorithm is used, why doesClassCastException: Integer can not cast to Long exception ap‐ pear? . . . . . . . . . . . . . . . . . . . . . . . . . . . that ** Apache ShardingSphere has carried out the column‐sensitive and data‐sensitive mapping conversion of the logical column facing the user and the plaintext and ciphertext columns facing the underlying by user no longer depends on the actual database table structure. The connection, mapping, and conversion between the user and the underlying database are handled by Apache ShardingSphere. Why should

ClassCastException: Integer can not cast to Long? . . . . . . . 509 13.4.5 [分片、PROXY] 实现 StandardShardingAlgorithm 自定义算法时，指定 了 Comparable 的具体类型为 Long, 且数据库表中字段类型为 bigint，出现 ClassCastException: Integer can not cast implements StandardShardingAlgorithm<Integer> { @Override public String doSharding(final Collection availableTargetNames, final PreciseShardingValue<Integer> shardingValue) { String resultDatabaseName Collection doSharding(final Collection availableTargetNames, final RangeShardingValue<Integer> shardingValue) { throw new RuntimeException("This algorithm class does not support range 9.1.

ClassCastException: Integer can not cast to Long? . . . . . . . 487 13.4.5 [分片、PROXY] 实现 StandardShardingAlgorithm 自定义算法时，指定 了 Comparable 的具体类型为 Long, 且数据库表中字段类型为 bigint，出现 ClassCastException: Integer can not cast ‘%s‘. H Y004 10003 Invalid format for actual data node ‘%s‘. 4 2000 10004 Unsupported SQL node conversion for SQL statement ‘%s‘. H Y000 10005 Column ‘%s’in field list is ambiguous. 4 2S02 10006 Unknown 错误信息 HY004 11000 Invalid value ‘%s‘. HY004 11001 Unsupported conversion data type ‘%s‘ for value ‘%s‘. HY004 11010 Unsupported conversion stream charset ‘%s‘. 语法 SQL State Vendor Code 错误信息 42000